The Company(X) who purchases from a Mfr.(Y) against E1 Sales and sends the goods to a company(Z)ie.(Z) placed the Purchase Order on (X), since X as trader purchase from (Y) and instruct him to send the goods to (Z) by endorsing the LR(Lorry Receipt)in favour of(Z).
Step1: Y will raise a Invoice Charging CST-2%(goods can be exmepted also in that State) & issue Form-E1 to X and Collect Form-C from X but material will be sent to Z in another State.
Step2: X(Seller) will raise a Invoice with no Tax on Z(Buyer) and surrender the Endorsed LR to (Z) to take delivery and collect Form-C.
The condition for E1 Sales is All the 3 parties involved should be Registered Dealers, The Goods should be registered in their CST Certificate,The goods movement should be Interstate, LR should be endorsed and the first sale can be CST-2% or CST-Exempted.